Dual-Ring Gas Burner Cover Layout for Stable Simmer Flames
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Solution Overview
Problem
Existing gas burners with multiple flame rings are sensitive to air movements and pressure changes, leading to instability and extinguishing of simmering flames, especially when the primary air feeding the simmering flame ring is affected by ambient conditions.
Innovation Solution
A gas burner design featuring a cup-shaped support with a raised edge that shields the simmering flame ring from disturbances, using a separate injector with a smaller gas flow and a flame divider to stabilize the simmering flames by feeding them with primary air from above the cooking hob, and incorporating a cover to protect the flame ring from ambient conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the simmering flame ring is disposed on the circumferential wall of the burner to provide low temperature cooking, then the burner can deliver minimum power for low temperature cooking, but the simmering flame ring becomes sensitive to air movements on the cooking hob and may be extinguished
Solution Approach 1:
A cover element is introduced as an intermediary component between the simmering flame ring and the ambient environment. This cover shields the simmering flames from air movements and disturbances on the cooking hob surface, preventing extinction while allowing the burner to maintain minimum power delivery capability for low temperature cooking
Solution Approach 2:
The cover element is positioned in advance to protect the simmering flame ring before air movements can affect it. By pre-establishing this protective barrier, the system prevents the harmful effect of air currents on the delicate simmering flames, ensuring continuous stable operation at minimum power levels
2Device complexity
If the primary air feeding the simmering flame ring is taken from below the cooking hob, then the burner structure is simplified, but the simmering flames become sensitive to streaming effects and pressure reductions when doors are opened, leading to extinguishing
Solution Approach 1:
The cover element acts as a protective intermediary that isolates the simmering flame ring from ambient pressure changes and streaming effects. Even though primary air is taken from below the cooking hob for structural simplicity, the cover prevents direct exposure to door-opening-induced pressure reductions and air currents, maintaining flame stability
3Reliability
If a cover with outwardly extending edge is added to shield the simmering flame ring, then the stability and protection from ambient conditions is improved, but the device complexity increases
Solution Approach 1:
The cover element serves multiple functions simultaneously: it shields the simmering flame ring from air movements, protects against ambient conditions, and can be integrated with the existing burner structure. This multi-functionality justifies the addition by providing comprehensive protection without requiring multiple separate components
Solution Approach 2:
The cover element is designed to be integrated with the burner assembly, combining the protection function with the existing structure. By merging the cover with the burner components rather than making it a completely separate assembly, the overall device complexity is minimized while still achieving the desired shielding effect
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables a minimum gas flow for simmering flames, ensuring stability and reducing the burner's height, allowing for installation in thin cooking hobs while maintaining reliable operation and ease of installation and maintenance.
Implementation Method 1
The instant gas burner employs a cover, with an outwardly extending edge that shields the passages feeding the ring of simmering flames from ambient conditions or disturbances.
Implementation Method 2
using a separate injector with a smaller gas flow and a flame divider to stabilize the simmering flames by feeding them with primary air from above the cooking hob
Implementation Method 3
using a separate injector with a smaller gas flow and a flame divider to stabilize the simmering flames by feeding them with primary air from above the cooking hob
Implementation Method 4
Gas burners with one or more flame rings are known, in particular gas burners with a ring of main flames positioned at a certain level of the burner and a ring of simmering flames positioned at a different level.
Data Source
AI summary
A gas burner for cooking appliances employing a ring of main flames for cooking, and a ring of simmering flames for heating. A first chamber contains the gas and primary air mixture for feeding the ring of main flames through a circumferential wall with a plurality of radial apertures. The chamber contains the gas and primary air mixture for feeding the ring of simmering flames through radial passages. The chambers are superposed, and a separator plate is interposed between the chambers. A cover rests on the separator plate and the radial apertures are defined therebetween. The cover extends beyond the passage and shields same from ambient conditions.